If we're trying to be arbitrary precision, unsigned char clearly won't cut it.  Needed for dec->bin conversions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42910 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/APFloat.cpp b/lib/Support/APFloat.cpp
index ab30a03..f2f6953 100644
--- a/lib/Support/APFloat.cpp
+++ b/lib/Support/APFloat.cpp
@@ -39,7 +39,7 @@
 
     /* Number of bits in the significand.  This includes the integer
        bit.  */
-    unsigned char precision;
+    unsigned int precision;
 
     /* If the target format has an implicit integer bit.  */
     bool implicitIntegerBit;